ffsim.contract

Functions for contracting tensors and constructing linear operators

contract_diag_coulomb(vec, mat, norb, nelec, *)	Contract a diagonal Coulomb operator with a vector.
contract_num_op_sum(vec, coeffs, norb, nelec)	Contract a linear combination of number operators with a vector.
contract_one_body(vec, mat, norb, nelec)	Contract a one-body tensor with a vector.
diag_coulomb_linop(mat, norb, nelec, *[, ...])	Convert a (rotated) diagonal Coulomb matrix to a linear operator.
num_op_sum_linop(coeffs, norb, nelec, *[, ...])	Convert a (rotated) linear combination of number operators to a linear operator.
one_body_linop(mat, norb, nelec)	Convert a one-body tensor to a linear operator.
two_body_linop(two_body_tensor, norb, nelec)	Convert a two-body tensor to a linear operator.